Home / 13,986.53-20,960.11-6,959.91

Finding the Fourth Proportional to 13,986.53, 20,960.11 and 6,959.91

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Solution

The fourth proportional to 13,986.53, 20,960.11 and 6,959.91 is: 10,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.53 : 20,960.11 = 6,959.91 : x
  2. Step 2: Convert to fraction form
    13,986.53/20,960.11 = 6,959.91/x
  3. Step 3: Cross multiply
    13,986.53x = 20,960.11 × 6,959.91
  4. Step 4: Simplify right side
    13,986.53x = 145,880,479.19
  5. Step 5: Solve for x
    x = 145,880,479.19/13,986.53
  6. Step 6: Final answer
    x = 10,430.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.